Heater



June 24, 1930.

C. A. MaCMlLLER HEATER Filed May 2l, 1927 7lIIlIIIIIIIIIIIIIIIIIIIIIIIIJ vPatented June 24, 1930 UNITED STATES om A. hmmm, or afname, EINNEsorAl HEATER.

Application le Hay 21,

c The object of this invention'is to maintain a clear vision so that theroadway may be clearly observed by the driver of a motor vehicle, whenprotected by a windshield. In cold weather the windshield and windows ofa closed car become obscured by moisture condensing thereon, andfrequently freezing, vand the'principal object of this invention is toprevent the condensing of vapor upon the 10 windshield end other windowsof an enclosed motor vehicle, and at the same time to warm the vehicleand therebyadd to the comfort of the occupants.

In accordance with the present invention an air pipe is associated withthe exhaust manifold of an internal combustion engine and air circulatedthrough said pipe is heated and discharged into the interior of `thevehicle body in such manner as to warm the vehicle and prevent moisturein the air from condensing upon the windshield or the windows, and inconsequence, a clear and unobstructed vision is assured.

While the drawingillustrates a preferred I 2 5 embodiment of theinvention, it is to be understood that in adapting the means to meetspecific needs and requirements, the desi n may be varied and such otherchanges in t e minor details of construction may be re- Y 304 sorted towithin the scope of the invention as claimed, without 'departing fromthe spirit thereof.

'For a full understanding of the invention and the merits thereof,reference is to be had to the following description and the drawinghereto attached, in which- Figure. 1 is a side view illustrative of anembodiment ofthe invention.

Figure 2 is a'central, longitudinal, seetional view of the heater, theparts being on a larger scale.

Figure 3 is a transverse sectional view on the line 3-3 of Figure 2. f

Corresponding and like arts are referred to in the following descrl tionand designated in the several views o the drawings by like referencecharacters.

The numeral 1 designates thel radiator, 2 the engine, and 3 thewindshield of a motor vehicle. The fan 4 for drawing air through 1927.Serial No. 193,227.

the radiator 1 may be of any well known construction. The foregoing'enumerated parts are of well known construction and arrangement and areillustrated to demonstrate the application of the invention.

The exhaustmanifold 5 may be of any determinate construction and isformed with a spud 6 for the couplin of the exhaust pipe thereto forreceiving t e exhaustfrom the engine in a manner0 well understood. Anair pipe 7 is disposed within the manifold 5 and preferably forms a partthereof being cast therewith. The air pipe 7 extends through oppositeends of the manifold. Studs 8 con` neet the air pipe 7 at differentpoints in its length with the walls of the manifold 5, therebymaintaining the air pipe in s aced relation from the walls of themanifol A funnel 9 is attached to the forward end of the manifold 5 andis in communication with the air pipe 7 and is disposed to receive airfrom the fan 4, with the result that air is positively circulatedthrough the pipe 7. A coupling v10 is tted tothe rear end of the airpipe and a distributing pipe 11 is connected thereto and arranged todeliverthe warm air to the interior of the vehicle in a manner to reventmoisture condensing upon the winds ield 3.

n the operation of the invention a portion of the air 'drawn throughtlie radiator 1 by means ofthe fan 4 is forced into the funnel 9 andcompelled to pass through the pipe 7 and pipel 11 to the interior of thecar to warm the same or to such point as to prevent moisture condensingupon the windshield. The air in its passage through the pipe 7 is heatedby reason of the'exhaust discharged from the engine into the manifold. Bhaving the pipe 7 cast with the manifol loose joints are prevented andthere is no chance for the eaust gases to mix with the air, hence' thelatter is supplied te the vehicle ure and warm, thereby vadding to thecom.

ort of the occupants in cold weather. A, pipe 12 connects with the pipe11 and terinmates in a nozzle 13 adJacent the lower frontwindow. Theascendin current of warm air revents moisture con ensing upon the winds'eld and windows and assures a clear vision. it is also observed thatthe air 1m eol supplied to and passing through-`r the pipe 7 p is pureand free'from contamination by gas or other impurity.

The device, as stated, consists of a casting in the form of an elongatedhollow body which is open at its rear and closed at its ends. When inplace the open rear side of' the hollow' body is closed by the side ofthe en neto which the device is attached.

aving thus described the mvention, I

. claim:

A conmbined lexhaust lmanifold andlair heater for motoi` vehicles,consisting of an elongated hollow body yclosed at oppositeendsandfwholly open atits rear side whichis closed by a side of theenginefto whichvthe body is attached, an air pipe within and in- 'tegralwith the body and extending through the closed ends thereof, said bodyhaving an integralq s'pudy adjacent one end for attachment of theexhaust pipe thereto, and a funnelremovably attached to the opposite endof the body and in communication with the air pipe to supply airthereto.

In testimon whereof I aix m signature.

CAR Ag MAoMlLLE [L. 8.]

